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Mysterious sources of fast radio bursts (FRB) can be neutron stars with extremely strong magnetic fields – magnetars – that produce synchrotron mass radiation in the radio range. This scenario was proposed by the Russian astrophysicists Maxim Barkov and Sergei Popov, as well as Dmitry Khangulyan from the University of Rikkyo (Japan). The results of the study were presented by researchers in a repression published in the arXiv repository.

Researchers have suggested that an astrophysical maser may be responsible for the occurrence of radio emission. The maser can produce coherent radiation in the microwave range. This requires a medium where an inverse population of energy levels is observed. In other words, it must contain many excited particles and few particles in the ground state. Cosmic radiation transmits them to an excited state, after which they emit radio waves. The latter, which pass by other excited particles, cause them to emit radio radiation at the same frequency, which amplifies the radiation. Lasers work in a similar way.

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The problem is that the mechanisms for generating mass emissions discussed are capable of producing radio frequency with too low a frequency. In a new thesis, astrophysicists have shown that this is solved if the magnet generates a relativistic shock wave with a weak magnetic field. This can be observed in many astrophysical environments, including plerions (a nebula driven by a pulsating wind) and shock waves from gamma radiation. The magnet may be in the nebula left over from the supernova and oriented at such an angle to the observer that the visible mass emission lasts for milliseconds.

Astrophysicists have concluded that mass radiation can be generated by magnetars in several cases. For example, if a magnet that produces a flash with an energy of the order of 10 to 45 power of one erg per second and placed in a nebula is either an isolated neutron star (which is in a short but intense X-ray phase), or tube away from the high-speed observer, or is part of a binary star system with an orbital distance of less than 10 to 12 power meters.

Fast radio bursts occur within a few milliseconds and are accompanied by an enormous amount of energy being released into space – which the sun emits for tens of thousands of years. Most scientists attribute this phenomenon to natural causes, such as supernova explosions, collisions with neutron stars, active black holes, or magnetars. The link between FRB and magnetic explosions is currently actively discussed in the scientific literature, as this type of neutron star is known to be able to produce extremely bright flashes with an energy release of about 10 to 47th power of erg per second. It is known that the magnet SGR 1935, located in the Milky Way, can produce simultaneous flashes in both X-rays and gamma rays and in radio rays, which supports the version of the magnetic origin of FRB.

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